Process of producing calcium phosphamid.



UNITED STATES PATENT OFFICE.

SAMUEL rnncoox, orv CHICAGO, rumors, ASSIGNOB Gib-THE SOUTHERN ELECTRO-CHEMICAL COMPANY, or NEW YORK, N. Y., A GORPQRATIQN or NEW JERSEY.

.rnocnss or rnonucme cnnorumrnosrnamrp.

N Drawing.

To all q vhom it mag concern;

Be it known that I, "SAMUEL PEAOOCK,

' a citizen of the United States, residing at .Chicago, .in the'countyof Cook and State bf Illinois, have invented certain new and usefulImprovements in Processes of Producing Calcium Phosphamid; and I dohereby declare the following to be 'a full, clear, and

exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to a method of producing. amids of phosphorus,and has for its object to manufacture products-of this nature morecheaply and expeditiously than has been possible heretofore.

To these ends the invention consists in the novel steps and combinationsof steps constituting my invention, more fully hereinafter disclosed andparticularly pointed out in the claims.

- I have discovered when calcium phosphid is' heated between hightemperatures, say above 800 O; and to less than 1400 G. in

an atmosphere of nitrogen, that complex.

The exact chemical composition of the phosphorus nit-rid product is alsostill in doubt, but the phosphorus calciumamid is clearly present as areaction product. As

- produced in the electric furnace, however,

this amid is a substitution product, the hydrogen in thatcase beingreplaced by .cal-

cium according to the following equation P (NH,) +3Ca=P (CaN) +3H,. Thephosphorus nitrid produced'above is believed to be P N for it formsanacid ammonium phosphate with water.

The, reactions which actually take place in the furnace are-invariablyincomplete,

and therefore they are very complex 1n nature which greatly interfereswith exact the products.

Specification of Letters iatent. Patented Dec. 17, 1912. Applicationfiled .Tu1y 12,'1 .910. Serial no. 571,614.

determinations of the'chemical character of Commercially, however, theresults obtained through the method so far disclosed are valuablebecause the nitrogen is chemically fixed and may be readily convertedinto the form of ammonia. The process, therefore, results in theproduction of a substance which when added to soil or to' water,produces both phosphorus and nitrogen in a form very desirable as aplant food. In addition to this, this chemical combination of calcium,phosphorus and nitrogen is useful in many other processes involving theuse of compounds of phos phorus or of nitrogen hydrids.

It is evident that those skilled in the art may vary the process withoutdeparting from the spirit of the invention, and therefore, I do not Wishto be limited to details except as may be required by the claims.

What I claim is:

1. The process of producing an alkaline earth phosphamid which consistsin subject- 'ing an alkaline earth phosphid in an atmosphere of nitrogento a temperature suflicient to cause thesaid constituents to react,substantially as described.

I 2. The process of producing calcium phosphamid which consists insubjecting a calcium phosphid in an atmosphere of nitrogen toatemperature sufficient to cause the said constituents to react,substantially as described.

3. The process of producing calcium phosphamids and nitrids ofphosphorus Which consists in exposing calcium phosphid to the action ofnitrogen; heating said phosphid above 800 (1, to bring about a reactionbetween said constituents; and in finally recovering the phosphamid andnitrid of phosphorus thus produced, substantially as described.

In testimony whereof-I afiix my signature, in presence of two witnesses.

SAMUEL PEACOCK. Witnesses:

R. J. BOYLAN, T. A. Wrrrmnsroon.

' 00p!" 61- till! p'lt e'ntmnz obtained for five cents each, byaddressing the C-ommissioner of Patents,

Washington, D. 0."

